# Sealife Tracker vs Sea Watcher

The clearest difference is review sentiment: Sea Watcher at 100% against Sealife Tracker's 33%. Sea Watcher also leads on update cadence (every 6 weeks vs every 18 months). Sealife Tracker's advantage is iOS requirement (8.0 vs 13.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sealife Tracker ships an update every 18 months, Sea Watcher every 6 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Sealife Tracker | Sea Watcher |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (2 ratings)](https://appshunter.io/ios/app/sealife-tracker/id663800293/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 37 MB | 124 MB |
| Requires iOS | **8.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Natural Apptitude](https://appshunter.io/developer/815539119) | [Sea Watch Foundation - The Cetacean Monitoring Unit](https://appshunter.io/developer/1815308568) |

## What reviewers say

### Sealife Tracker

[App page](https://appshunter.io/ios/app/sealife-tracker/id663800293)

This app collects data on marine species along the UK coastline, focusing on invasive and climate change indicator species. It's a collaborative project involving several environmental organizations and diving clubs.

**Highlights:** Marine species data collection, UK coastline focus, Invasive species tracking, Climate change indicator species, Environmental partnership project

**Features:** macOS Compatibility

**In-app purchases:** none


### Sea Watcher

[App page](https://appshunter.io/ios/app/sea-watcher/id1528176810)

Log sightings of marine megafauna like whales, dolphins, and seals across UK and European waters. Identify species, record valuable data, and contribute to scientific understanding of marine life. Review your past sightings and see what others have observed.

**Highlights:** Log marine megafauna sightings, Identify whales, dolphins, seals, and more, Record sighting location and time, Contribute to marine species research, View past and recent sightings, Learn about marine species

**In-app purchases:** none


## Frequently asked questions

### Is Sealife Tracker free?

Sealife Tracker is free to download, with no in-app purchases.

### Is Sea Watcher free?

Sea Watcher is free to download, with no in-app purchases.

### Do Sealife Tracker or Sea Watcher have ads?

Neither Sealife Tracker nor Sea Watcher shows ads.

### Which is updated more often, Sealife Tracker or Sea Watcher?

Sealife Tracker ships an update every 18 months, and Sea Watcher every 6 weeks. Most recently, Sealife Tracker was updated on November 1, 2026 and Sea Watcher on November 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*